Propulsive Dynamics A/T upgrade Beta results

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Sergeant
Platinum Vendor
Jan 23, 2017
365
Hope the upgraded trans works out... When you MT swap you need another 100whp almost to match the AT times. 370f doesn't sound realistic to me for the trans temps, maybe have the conversion formula wrong? Does the value match up with water and oil temp during steady state cruising?
 

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Specialist
Free Vendor
Nov 6, 2016
60
Sav
Good catch on the conversion. It seemed very high but makes sense why. This is with the OEM heat exchanger removed. We had intention of adding the cooler but never made it before the race. So this was just from internal tranny friction+engine block conduction. I feel better now :)
 

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Corporal
Free Vendor
Nov 6, 2016
172
Madison, AL
@[email protected] @CKI false alarm on the trans temp, formula was wrong. Peak temp in that log seen here was actually 188.6 *F, not 372* :)
Praise baby Jesus. I was having mixed emotions about this. LOL
Good to know the improved thermals in the frictions, steels and bushings are keeping the heat out of the clutch packs even in the absence of an aftermarket cooler, however, I would still recommend one especially for racing in hotter climates.
Nonetheless, excellent data! Thanks for getting the temp monitor working in such short notice. I was beating the hell out of Chris about it ;)
 
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R.G.

Lieutenant
Nov 17, 2016
658
Henderson, NV
My trans temp was in the 220 range today and it's only 70*
Summer is going to take a toll. Need to service mine and bump the cooler project up my list of to dos. Otherwise this AT upgrade will be forced to the top faster then I expected
 

doublespaces

Administrator
Oct 18, 2016
7,237
AZ
My trans temp was in the 220 range today and it's only 70*
Summer is going to take a toll. Need to service mine and bump the cooler project up my list of to dos. Otherwise this AT upgrade will be forced to the top faster then I expected
Time for me to take a look at some data and compare them in the awful arizona summer. This ADE 1K FMIC is going to be put to work.
 

Rob09msport

Captain
Oct 28, 2017
1,151
Monroe CT
I just bought a 2018 x5 and can't believe how much faster it shifts than my 09, does anyone have first hand how the pd calibration and upgrade compares to the 8hp. I am debating doing full rebuild or just using regular shop to install pd kit and use xhp with no rebuild and calibration.
 

Speedman3

Private
Nov 5, 2016
29
California
I just bought a 2018 x5 and can't believe how much faster it shifts than my 09, does anyone have first hand how the pd calibration and upgrade compares to the 8hp. I am debating doing full rebuild or just using regular shop to install pd kit and use xhp with no rebuild and calibration.
If you’re in the SoCal area I’m happy to let you take mine for a drive and see for yourself. I have stage 2 xhp and it’s comparable to DCT shifting....I have zero complaints, flawless.
 

matreyia

Captain
Apr 19, 2017
1,075
Time for me to take a look at some data and compare them in the awful arizona summer. This ADE 1K FMIC is going to be put to work.
I live in Houston where it often goes 100° and beyond. With the setrab and two fans my atf never goes above 190° f during ultra harsh driving and ambient temps.

Normal driving yields mid 170°f.
 
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